The gases and chemicals released by the engines of cars and trucks are called A terraces
B. acid rain
Cozones
D. emissions

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.

Ibelieve that is false not 100% tho

The saharan africa is desert not forest

From my point of view, the answer would be a.